Warm
Average highs sit around 30°C, giving warm days by monthly-average standards.
Weather Guide
Ogasawara Islands, Japan Average Monthly Weather
Weather score68Good annual avg
Best months: July, June, August
Across the year, average daytime temperatures are around 27°C, sunshine averages 0h per day, and rainfall totals about 1179mm. Sea temperatures average 25°C across the year.
Annual weather
Annual averages
Temp
27°C
Rain
1179mm
Annual total
Sun
0h
Sea
25°C
Weather score
68
Good avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 120mm, so some wet days are possible.
Limited sun
Sunshine averages 0h per day, so this is not one of the brighter months.
Warm sea
Sea temperatures average 28°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Ogasawara Islands, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August30°C average high
August is one of Ogasawara Islands' warmest months, with daytime heat above the yearly average.
Warmest monthsJune to October
This stretch sets the upper range for average daytime heat.
Rain
August120mm average rain
August is wetter than Ogasawara Islands' yearly average, so flexible plans matter more.
Driest monthsJanuary to February
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August0 hours average sun
August is close to Ogasawara Islands' usual sunshine level, with limited seasonal swing across the year.
Brightest monthsAll year
Sunshine stays consistently strong through the year.
Sea temperature
August28°C average sea
August is one of Ogasawara Islands' warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to October
Sea temperatures are usually near 28°C in this stretch, so swimming comfort is at its strongest.
Weather score
August72 weather score
August scores above Ogasawara Islands' yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJune to September and November
These months have the strongest weather score in the monthly averages.